From 36d22d82aa202bb199967e9512281e9a53db42c9 Mon Sep 17 00:00:00 2001 From: Daniel Baumann Date: Sun, 7 Apr 2024 21:33:14 +0200 Subject: Adding upstream version 115.7.0esr. Signed-off-by: Daniel Baumann --- docs/nspr/reference/pr_atomicset.rst | 42 ++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) create mode 100644 docs/nspr/reference/pr_atomicset.rst (limited to 'docs/nspr/reference/pr_atomicset.rst') diff --git a/docs/nspr/reference/pr_atomicset.rst b/docs/nspr/reference/pr_atomicset.rst new file mode 100644 index 0000000000..3c9df0b1b9 --- /dev/null +++ b/docs/nspr/reference/pr_atomicset.rst @@ -0,0 +1,42 @@ +PR_AtomicSet +============ + +Atomically sets a 32-bit value and return its previous contents. + + +Syntax +------ + +.. code:: + + #include + + PRInt32 PR_AtomicSet( + PRInt32 *val, + PRInt32 newval); + + +Parameters +~~~~~~~~~~ + +The function has the following parameter: + +``val`` + A pointer to the value to be set. +``newval`` + The new value to assign to the ``val`` parameter. + + +Returns +~~~~~~~ + +The function returns the prior value of the referenced variable. + + +Description +----------- + +:ref:`PR_AtomicSet` first reads the value of var, then updates it with the +supplied value. The returned value is the value that was read\ *before* +memory was updated. The memory modification is unconditional--that is, +it isn't a test and set operation. -- cgit v1.2.3